At a more fundamental level, the hydrodynamics of these orbital shaking devices has received recent attention, from both experimental [1]}, [2]}, [3]} and theoretical [1]}, [5]} perspectives, predominantly using linear potential flow models. These models are often complemented with effective viscous damping rates to incorporate the energy dissipation responsible for the phase-shifts between wave and shaker, which was also seen to be sometimes responsible for damping-induced symmetry-breaking linear mechanisms resulting in linear spiral wave patterns [5]}, [7]}. Previous studies make mostly use of classical existing theories for general linear sloshing dynamics, reviewed for instance in [8]} or [9]}.
